From: Peter Ujfalusi Date: Thu, 5 Mar 2015 14:55:21 +0000 (+0200) Subject: ASoC: davinci-mcasp: Allow complete shutdown of McASP when not in use X-Git-Tag: v4.1-rc1~117^2~1^2~7^3~5 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6afda7f50754;p=karo-tx-linux.git ASoC: davinci-mcasp: Allow complete shutdown of McASP when not in use Rearrange the pm_runtime_get/put_sync calls so the IP will be turned off when it is not in use. Signed-off-by: Peter Ujfalusi Signed-off-by: Mark Brown --- diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index 0c882995a357..33cea0728cd2 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -62,6 +62,7 @@ struct davinci_mcasp_context { u32 config_regs[ARRAY_SIZE(context_regs)]; u32 afifo_regs[2]; /* for read/write fifo control registers */ u32 *xrsr_regs; /* for serializer configuration */ + bool pm_state; }; struct davinci_mcasp { @@ -519,7 +520,7 @@ static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); } out: - pm_runtime_put_sync(mcasp->dev); + pm_runtime_put(mcasp->dev); return ret; } @@ -528,6 +529,7 @@ static int __davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id, { struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); + pm_runtime_get_sync(mcasp->dev); switch (div_id) { case 0: /* MCLK divider */ mcasp_mod_bits(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG, @@ -553,6 +555,7 @@ static int __davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id, return -EINVAL; } + pm_runtime_put(mcasp->dev); return 0; } @@ -567,6 +570,7 @@ static int davinci_mcasp_set_sysclk(struct snd_soc_dai *dai, int clk_id, { struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai); + pm_runtime_get_sync(mcasp->dev); if (dir == SND_SOC_CLOCK_OUT) { mcasp_set_bits(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG, AHCLKXE); mcasp_set_bits(mcasp, DAVINCI_MCASP_AHCLKRCTL_REG, AHCLKRE); @@ -579,6 +583,7 @@ static int davinci_mcasp_set_sysclk(struct snd_soc_dai *dai, int clk_id, mcasp->sysclk_freq = freq; + pm_runtime_put(mcasp->dev); return 0; } @@ -1053,6 +1058,10 @@ static int davinci_mcasp_suspend(struct snd_soc_dai *dai) u32 reg; int i; + context->pm_state = pm_runtime_enabled(mcasp->dev) + if (!context->pm_state) + pm_runtime_get_sync(mcasp->dev); + for (i = 0; i < ARRAY_SIZE(context_regs); i++) context->config_regs[i] = mcasp_get_reg(mcasp, context_regs[i]); @@ -1069,6 +1078,8 @@ static int davinci_mcasp_suspend(struct snd_soc_dai *dai) context->xrsr_regs[i] = mcasp_get_reg(mcasp, DAVINCI_MCASP_XRSRCTL_REG(i)); + pm_runtime_put_sync(mcasp->dev); + return 0; } @@ -1079,6 +1090,8 @@ static int davinci_mcasp_resume(struct snd_soc_dai *dai) u32 reg; int i; + pm_runtime_get_sync(mcasp->dev); + for (i = 0; i < ARRAY_SIZE(context_regs); i++) mcasp_set_reg(mcasp, context_regs[i], context->config_regs[i]); @@ -1095,6 +1108,9 @@ static int davinci_mcasp_resume(struct snd_soc_dai *dai) mcasp_set_reg(mcasp, DAVINCI_MCASP_XRSRCTL_REG(i), context->xrsr_regs[i]); + if (!context->pm_state) + pm_runtime_put_sync(mcasp->dev); + return 0; } #else @@ -1398,13 +1414,6 @@ static int davinci_mcasp_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); - ret = pm_runtime_get_sync(&pdev->dev); - if (IS_ERR_VALUE(ret)) { - dev_err(&pdev->dev, "pm_runtime_get_sync() failed\n"); - pm_runtime_disable(&pdev->dev); - return ret; - } - mcasp->base = devm_ioremap(&pdev->dev, mem->start, resource_size(mem)); if (!mcasp->base) { dev_err(&pdev->dev, "ioremap failed\n"); @@ -1584,14 +1593,12 @@ static int davinci_mcasp_probe(struct platform_device *pdev) return 0; err: - pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); return ret; } static int davinci_mcasp_remove(struct platform_device *pdev) { - pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); return 0;